Pipe joints or couplings – With assembly means or feature
Patent
1981-01-15
1984-10-16
Callaghan, Thomas F.
Pipe joints or couplings
With assembly means or feature
285319, 285 94, 166124, 277207A, F16L 2102
Patent
active
044771045
ABSTRACT:
There are disclosed two embodiments of an apparatus for releasably latching the lower end of a tubing string within the bore of an upstanding well conduit by means of latching parts adapted to be received in latching position beneath a shoulder in the bore of the well conduit. The latching parts are locked in latching position by locking means which is engageable and releasable in response to manipulation of the well string. The latching parts are moved into unlatching position, upon release of the locking means, without necessity of sliding contact between the latching parts and the shoulder. There are also disclosed two embodiments of a seal ring clamped within a groove about a stinger portion of the apparatus for sealably engaging the bore of the well conduit.
REFERENCES:
patent: 2027653 (1936-01-01), Roye
patent: 3023030 (1962-02-01), Torres
patent: 3041089 (1962-06-01), Purves
patent: 3222088 (1965-12-01), Haeber
patent: 3492027 (1970-01-01), Herring
patent: 3499665 (1970-03-01), Conrad
patent: 3912009 (1975-10-01), Davis, Jr.
AVA International Corporation
Callaghan Thomas F.
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